Home / 39,240.45-54,151.18-21,335.91

Finding the Fourth Proportional to 39,240.45, 54,151.18 and 21,335.91

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Solution

The fourth proportional to 39,240.45, 54,151.18 and 21,335.91 is: 29,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,240.45 : 54,151.18 = 21,335.91 : x
  2. Step 2: Convert to fraction form
    39,240.45/54,151.18 = 21,335.91/x
  3. Step 3: Cross multiply
    39,240.45x = 54,151.18 × 21,335.91
  4. Step 4: Simplify right side
    39,240.45x = 1,155,364,566.48
  5. Step 5: Solve for x
    x = 1,155,364,566.48/39,240.45
  6. Step 6: Final answer
    x = 29,443.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.